LTC2857CDD-2#TRPBF

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The LTC2857CDD-2#TRPBF is a high performance bidirectional RS485 transceiver, designed for RS485 communication applications in harsh industrial environments. It is designed to replace the popular LTC2485CD-TRPBF, which has become obsolete due to the increased demand for high speed communication between systems. With the LTC2857CDD-2#TRPBF transceiver, it is possible to achieve data transmission speeds of up to 20Mbit/s, depending on the communication network environment.

The device has a small form factor of TSSOP-14 package, offering significant board space savings. It is also highly reliable and robust, with an operating temperature range of -40 to 85°C. The device is rated for a maximum voltage of 25V, making it suitable for applications operating with a voltage range of up to 24V. The LTC2857CDD-2#TRPBF transceiver features an integrated low phase-shift 200kHz differential line driver, which complies with the standard EIA/TIA-485A electrical specifications.

The device has two independent receivers and transmitters, each with their own separate power supply pins, allowing for independent operation of each port. The receivers have differential inputs, allowing for better noise immunity. They also have built-in high logic resistors to help with EMI/RFI protection. The transmitters have full duplex auto direction sensing capability and adjustable data rates up to 20Mbit/s with an extended common mode voltage range of up to 30V. They also feature low phase-shift outputs to reduce EMI/RFI emissions.

The LTC2857CDD-2#TRPBF transceiver supports both data and POWER-over-RS485 communication protocols and is designed to operate with low power consumption. The device supports three operating modes: normal, half-duplex and full-duplex. In normal mode, the device has a maximum output of 484mA and a maximum input voltage of 8.8V, allowing for transmission and reception of data. In half-duplex mode, the device is designed for half-duplex communication, allowing for transmission of data in one direction at a time. In full-duplex mode, the device supports simultaneous transmission and reception of data in both directions.

The LTC2857CDD-2#TRPBF transceiver is ideal for applications in industrial systems such as Industrial Internet of Things (IIoT), remote monitoring systems, and communications networks in noisy environments. The device provides high data rate communication, low power consumption, and improved noise immunity, making it suitable for a wide variety of applications.

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